Merge branch 'master' of https://github.com/manwar/perlweeklychallenge-club

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diff --git a/challenge-034/paulo-custodio/python/ch-2.py b/challenge-034/paulo-custodio/python/ch-2.py
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+++ b/challenge-034/paulo-custodio/python/ch-2.py
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+#!/usr/bin/python3
+
+# Challenge 034
+#
+# Task #2
+# Contributed by Dave Cross
+# Write a program that demonstrates a dispatch table.
+
+import sys
+
+# simple rpn calculator
+stack = []
+def add():
+    b = stack.pop()
+    a = stack.pop()
+    stack.append(a+b)
+
+def sub():
+    b = stack.pop()
+    a = stack.pop()
+    stack.append(a-b)
+
+def mul():
+    b = stack.pop()
+    a = stack.pop()
+    stack.append(a*b)
+
+def div():
+    b = stack.pop()
+    a = stack.pop()
+    stack.append(a/b)
+
+def prt():
+    print(stack.pop())
+
+dispatch = {'+': add, '-':sub, '*':mul, '/':div, '.':prt}
+
+prog = "".join(sys.argv[1:])
+for c in prog:
+    if c.isspace():
+        pass
+    elif c.isdigit():
+        stack.append(int(c))
+    else:
+        dispatch[c]()